MCP4251T-103E/SL

Digital Potentiometers Overview

The MCP4251T-103E/SL is a dual-channel digital potentiometer IC manufactured by Microchip Technology. It features two independent 8-bit resistor networks, providing 256 taps (257 steps) per channel with a nominal resistance of 10 kΩ. The device utilizes an SPI serial interface for control and employs volatile RAM memory to store wiper settings. It operates within a supply voltage range of 1.8V to 5.5V and supports an extended industrial temperature range from -40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual Potentiometer Configuration: Contains two independent 8-bit resistor networks with 256 taps each.
• SPI Interface: Supports high-speed serial communication at up to 10 MHz in modes 0,0 and 1,1.
• Wide Voltage Operation: Functional operation supported from 1.8V to 5.5V; specified characteristics from 2.7V to 5.5V.
• High-Voltage Tolerant Inputs: Digital inputs tolerate voltages up to 12.5V.

Digital Potentiometers Applications

• Programmable gain amplifiers
• Voltage reference adjustment
• Audio volume control

Digital Potentiometers Procurement Notes

Verify the package suffix 'SL' against official documentation to confirm pinout and thermal pad configuration. Ensure the specific revision level matches design requirements. Confirm availability through authorized distribution channels as stock levels vary.

Digital Potentiometers Selection Notes

Select this component when dual-channel resistive control is required without non-volatile storage needs. The 10kΩ value suits moderate impedance applications. Verify that the volatile memory behavior aligns with system power-up state requirements.

Digital Potentiometers Part Context

This part belongs to the MCP41XX/42XX family of SPI digital potentiometers. The 'MCP4251' designation indicates a dual-potentiometer variant with 8-bit resolution and volatile memory. The '103' code specifies the 10 kΩ resistance value.

Digital Potentiometers Replacement Considerations

Direct replacements include other MCP4251 variants with different packages or resistance values. For single-channel needs, consider MCP4151. For non-volatile requirements, consider MCP4261.